How To Set Up OTLP/HTTP Receiver in Astra Traffic Collector

Last updated: August 19, 2025

Astra Traffic Collector usually listens on port 4317 for grpc communication from sensors. In some scenarios, sesnor demands OTLP/HTTp communication over port 4318. In such cases, you can configure Astra Traffic Collector to receive OTLP data over HTTP or HTTPS on port 4318.

Option A: HTTP Configuration (If Astra Traffic Collector resides in same VM or VPC as that of sensor)

This is the recommended way if Astra Traffic Collector is running as a Kubernetes container

Step 1: Edit the config_custom.yaml

Locate the config_custom.yaml under installation directory of Astra Traffic Collector. 


receivers:
  otlp:
    protocols:
      http:
        endpoint: "0.0.0.0:4318"  # HTTP receiver on port 4318

processors:
  #...existing

Step 2: Restart the Astra Traffic Collector

Option B: HTTPS Configuration (If communication between sensor and collector must happen via external network)

Step 1: Edit the config_custom.yaml

Locate the config_custom.yaml under installation directory of Astra Traffic Collector.


receivers:
  otlp:
    protocols:
      http:
        endpoint: "0.0.0.0:4318"  # HTTP receiver on port 4318
        tls:
          cert_file: "/etc/otelcol-contrib/server.crt"
          key_file: "/etc/otelcol-contrib/server.key"
          ca_file: "/etc/otelcol-contrib/ca.crt

Use the ca_file field only for self-signed or untrusted CAs.

Also mount the certs in docker-compose.yaml :


volumes:
  - <path_to_certificates>/<server-cert-file>:/etc/otelcol-contrib/server.crt:ro
  - <path_to_certificates>/<server-key-file>:/etc/otelcol-contrib/server.key:ro
  - <path_to_certificates>/<ca-cert-file>:/etc/otelcol-contrib/ca.crt:ro

Step 2: Restart the Astra Traffic Collector